Play call/game plan

Can't seem to get this to work properly. I continue to try and set the head coach for the game plan and the coordinators for play call and it continues to switch back to the HC for everything when I leave the screen and come back to it.
Is this a bug or am I missing something. If this is what's suppose to happen, what's the point of coordinators?
Also, subs never seem to happen, and the formations are way off compared to today's game.
Have only been at it for a week now, but the Pro game version that was revamped appears to have a lot more flaws than the 2020 college game.
Is this a bug or am I missing something. If this is what's suppose to happen, what's the point of coordinators?
Also, subs never seem to happen, and the formations are way off compared to today's game.
Have only been at it for a week now, but the Pro game version that was revamped appears to have a lot more flaws than the 2020 college game.